1231102303 has 4 divisors (see below), whose sum is σ = 1242608040. Its totient is φ = 1219596568.

The previous prime is 1231102291. The next prime is 1231102309. The reversal of 1231102303 is 3032011321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3032011321 = 173 ⋅17526077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231102303 is a prime.

It is a super-2 number, since 2×1231102303² = 3031225760903807618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231102309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5752708 + ... + 5752921.

It is an arithmetic number, because the mean of its divisors is an integer number (310652010).

Almost surely, 2^1231102303 is an apocalyptic number.

1231102303 is a deficient number, since it is larger than the sum of its proper divisors (11505737).

1231102303 is a wasteful number, since it uses less digits than its factorization.

1231102303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11505736.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231102303 is about 35087.0674608181. The cubic root of 1231102303 is about 1071.7612426688.

Adding to 1231102303 its reverse (3032011321), we get a palindrome (4263113624).

The spelling of 1231102303 in words is "one billion, two hundred thirty-one million, one hundred two thousand, three hundred three".